Seek refuge in Allah from evil which I have done and not done

The Prophet (Sallallaahu ‘alaihi wasallam) used to supplicate (in these words):

“Allahumma inni audhu bika min sharri ma `amiltu, wa min sharri ma lam a`mal(O Allah! I seek refuge in You from the evil of that which I have done and the evil of that which I have not done).”

[Muslim]

Commentary:This prayer is also very comprehensive. Sometimes a person does a virtuous deed but it is tainted with slight hypocrisy or pride. It is an element which destroys even the most virtuous deeds. It is this mischief against which Allah’s Protection has been sought through this prayer.